US3712496A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Push-off device for hand truck
Assignee: Individual
•
Filing: 1971-04-14
•
Granted: 1973-01-23
•
Expires: 1991-04-14
Abstract
Abstract A push-off mechanism for attachment to any size hand truck comprising individual pivot support members removably connected by means of clamps to the side members of the hand truck. Lever bars removably mounted on the pivot support members on the straddle side of the side member of the hand truck. The bottom end of each lever bars provided with longitudinally extendable members, the distal ends of which have means for supporting a laterally extending shaft which serves as the kick-off member. The top end of the lever bars have means for connecting a laterally extending shaft for manually pivoting the lever bars.
Inventors
- 👤 T Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 04:47
CPC Classifications
B; B62; B62B; B62B1/00; B62B1/10; B62B1/14; B62B1/145; B62B2203/00; B62B2203/70; B62B2203/72
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
206 words
Component parts of a push-off device for a hand truck including: pivot support members, each of said support members comprising a plate member formed to seat on the side member of said hand truck, a pin fixed to said plate member to horizontally overhang said plate member, and means for releasably connecting each of said plate member to a side member of said hand truck; a pair of lever bars, each thereof having a plurality of holes in one end thereof, a hole in the other end thereof, and a hole intermediate the ends thereof, said bore intermediate the ends thereof having a diametral dimension to rotatably engage said pin of said pivot support member; a pair of lever bar extensions having plurality of holes substantially the length thereof, and a bore in the distal end of said lever bar extensions; releasable means for connecting said lever bar extensions and said lever bars through said plurality of holes in said lever bars and said lever bar extensions; a shaft member laterally extending between said lever bar extensions and supported in said bores; and a second shaft member laterally extending between said lever bars and supported in said holes in the other end of said lever bars.
Claim 2
Dependent Claim
206 words
Component parts of a push-off device for a hand truck including: pivot support members, each of said support members comprising a plate member formed to seat on the side member of said hand truck, a pin fixed to said plate member to horizontally overhang said plate member, and means for releasably connecting each of said plate member to a side member of said hand truck; a pair of lever bars, each thereof having a plurality of holes in one end thereof, a hole in the other end thereof, and a hole intermediate the ends thereof, said bore intermediate the ends thereof having a diametral dimension to rotatably engage said pin of said pivot support member; a pair of lever bar extensions having plurality of holes substantially the length thereof, and a bore in the distal end of said lever bar extensions; releasable means for connecting said lever bar extensions and said lever bars through said plurality of holes in said lever bars and said lever bar extensions; a shaft member laterally extending between said lever bar extensions and supported in said bores; and a second shaft member laterally extending between said lever bars and supported in said holes in the other end of said lever bars.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-23 | 1976-07-24 | 1977-01-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-23 | 1980-07-24 | 1981-01-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-23 | 1984-07-24 | 1985-01-23 | $7700.00 | Window Closed / Lapsed |